CN108981907A - Noise testing method and microphone holder - Google Patents
Noise testing method and microphone holder Download PDFInfo
- Publication number
- CN108981907A CN108981907A CN201811229868.3A CN201811229868A CN108981907A CN 108981907 A CN108981907 A CN 108981907A CN 201811229868 A CN201811229868 A CN 201811229868A CN 108981907 A CN108981907 A CN 108981907A
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- lever arm
- microphone
- noise
- microphone holder
- driving unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention relates to a kind of noise testing method and microphone holder, microphone holder includes: pedestal；Movable bracket is set on pedestal, for installing the microphone of test noise；Driving mechanism drives movable bracket with respect to base motions, and drives microphone adjusting position in a plurality of directions.In above-mentioned microphone holder when carrying out noise testing to air-conditioner outdoor unit, air-conditioner outdoor unit is placed in semianechoic room, the operation of temperature and air-conditioner outdoor unit in semianechoic room is adjusted, simulate the actual motion environment of air-conditioner outdoor unit, and the microphone installed by microphone holder carries out sound collection in multiple points, carries out Noise Sources Identification.Microphone holder can automatically adjust the acquisition position of microphone; Noise Sources Identification is carried out with hop controller; the semianechoic room progress ear recognition noise source that laboratory technician enters high temperature or low-temperature condition is not needed; test is efficient; and prevent laboratory technician from working long hours in high temperature or low temperature environment, protection test person.
Description
Technical field
The present invention relates to noise testings, more particularly to noise testing method and microphone holder.
Background technique
When carrying out noise testing to air-conditioner outdoor unit, air-conditioner outdoor unit is placed in semianechoic room, and pass through Mike
Wind collected sound signal in predetermined distance sends voice signal to controller and carries out processing analysis.In this way, collected sound
Sound signal is only the noise figure of certain point in the test space, can only identify whether noise figure is exceeded, is also needed to the identification of noise source
Laboratory technician is wanted to carry out ear recognition in semianechoic room, it can not automatic identification noise source.
Summary of the invention
Based on this, it is necessary to for can not automatic identification noise source problem, providing one kind can be with automatic identification noise
The microphone holder in source.
A kind of microphone holder, comprising:
Pedestal；
Movable bracket is set on the pedestal, for installing the microphone of test noise；
Driving mechanism drives the relatively described base motions of movable bracket, and drives the microphone in multiple sides
It is adjusted up position.
In above-mentioned microphone holder, microphone can be adjusted to by driving mechanism and movable bracket by the multiple of needs
Position can detecte the noise figure in predeterminable area at multiple positions, and then can find out maximum noise from multiple noise figures
Value determines that maximum noise value corresponding position is noise source.When carrying out noise testing to air-conditioner outdoor unit, by air-conditioner outdoor unit
It is placed in semianechoic room, the operation of temperature and air-conditioner outdoor unit in semianechoic room is adjusted, simulate air-conditioner outdoor unit
Actual motion environment, and by microphone holder install microphone multiple points carry out sound collection, carry out noise source knowledge
Not.Microphone holder can automatically adjust the acquisition position of microphone, carry out Noise Sources Identification with hop controller, do not need to test
Member enters high temperature or the semianechoic room of low-temperature condition carries out ear recognition noise source, and test efficiently, and prevents laboratory technician in high temperature
Or work long hours in low temperature environment, protection test person.
The movable bracket includes the first lever arm and connect with first lever arm in one of the embodiments,
The second lever arm, first lever arm and the relatively described base motions of second lever arm, and drive the microphone
The second party at least intersected in a first direction and with the first direction moves up.
The movable bracket includes support arm in one of the embodiments, and the support arm is along the first direction
Extend, first lever arm is slidably disposed on the support arm；First lever arm 32 is along the second direction
Extend, second lever arm is slidingly disposed on first lever arm, and fixes the wheat on second lever arm
Gram wind.
The driving mechanism includes the first driving unit and the second driving unit in one of the embodiments, and described the
One driving unit is connect with first lever arm, and first lever arm is driven to slide on the support arm；Described
Two driving units are connect with second lever arm, and second lever arm is driven to slide on first lever arm.
First driving unit includes the first actuator and the first transmission component in one of the embodiments, described
First transmission component connects first actuator and first lever arm, and first transmission component drives by described first
The driving of moving part drives first lever arm to slide along the first direction；Second driving unit includes the second driving
Part and the second transmission component, the second transmission component connection second actuator and second lever arm, described second
Transmission component drives second lever arm to slide along the second direction by the driving of second actuator.
First transmission component is rack and pinion assembly or transmission belt component in one of the embodiments, described the
Two transmission components are rack and pinion assembly or transmission belt component.
First lever arm is rotatablely arranged on the pedestal in one of the embodiments, and described second is living
Swing arm is rotatably connected with first lever arm, and fixes the microphone on second lever arm.
The driving mechanism includes third actuator unit and the 4th driving unit in one of the embodiments, described
Third driving unit is connect with first lever arm, and drives first lever arm rotation, the 4th driving unit with
The second lever arm connection, and drive the second lever arm rotation.
The present invention also provides a kind of noise testing methods, comprising:
Detect multiple noise figures around determinand at multiple positions；
The maximum noise value in the multiple noise figure is screened, determines that maximum noise value corresponding position is noise
Source.
The step of multiple noise figures detected at multiple positions in one of the embodiments, specifically:
In pre-set interval, the acquisition of the multiple noise figure is carried out according to preset path.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of microphone holder in one embodiment of the invention；
Fig. 2 is the decomposition diagram of microphone holder shown in Fig. 1；
Fig. 3 is the partial structural diagram of microphone holder shown in Fig. 1；
Fig. 4 is the structural schematic diagram of microphone holder in another embodiment of the present invention；
Fig. 5 is the decomposition diagram of microphone holder shown in Fig. 4；
Fig. 6 is the flow diagram of noise testing method in one embodiment of the invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figs. 1-2, in one embodiment of the invention, a kind of microphone holder 100 is provided, for installing microphone, into
Row noise testing.
Microphone holder 100 includes pedestal 10, movable bracket 30 and driving mechanism 50, and movable bracket 30 is set to pedestal
On 10, for installing the microphone of test noise, driving mechanism 50 drives the opposite pedestal 10 of movable bracket 30 to move, and drives
Microphone adjusting position in a plurality of directions, can be adjusted to needs for microphone by driving mechanism 50 and movable bracket 30
Multiple positions, can detecte the noise figure in predeterminable area at multiple positions, and then can find out most from multiple noise figures
Big noise figure determines that maximum noise value corresponding position is noise source.In this way, can be carried out automatically by microphone holder 100
Change test noise source, does not need through manual identified noise source.
Specifically, when carrying out noise testing to air-conditioner outdoor unit, air-conditioner outdoor unit is placed in semianechoic room, it will be partly
The operation of indoor temperature of eliminating the noise and air-conditioner outdoor unit is adjusted, and simulates the actual motion environment of air-conditioner outdoor unit, and passes through
The microphone that microphone holder 100 is installed carries out sound collection in multiple points, carries out Noise Sources Identification.Microphone holder 100 can
To automatically adjust the acquisition position of microphone, Noise Sources Identification is carried out with hop controller, laboratory technician is not needed and enters high temperature or low
The semianechoic room of temperature state carries out ear recognition noise source, and test efficiently, and prevents laboratory technician long in high temperature or low temperature environment
Time service, protection test person.
In some embodiments, movable bracket 30 include the first lever arm 32 and connect with the first lever arm 32 second
Lever arm 34, the first lever arm 32 and the opposite pedestal 10 of the second lever arm 34 move, and drive microphone at least in a first direction
And the second party intersected with first direction moves up, and drives Mike by the movement of the first lever arm 32 and the second lever arm 34
Wind is mobile, and moves microphone at least in two different directions, and then can at least adjust in a default face
The position of microphone acquires the noise figure of multiple points, detects noise source.
Movable bracket 30 further includes support arm 31 in one of the embodiments, and support arm 31 extends in a first direction,
First lever arm 32 is slidably disposed on support arm 31, slides the first lever arm 32 in a first direction；First activity
Arm 32 extends in a second direction, and the second lever arm 34 is slidingly disposed on the first lever arm 32, makes the second lever arm 34 along
The sliding of two directions, and microphone is fixed on the second lever arm 34, such microphone can be living in the first lever arm 32 and second
Under the drive of swing arm 34, adjusting position, acquires the noise information of multiple points in the first direction and a second direction.
Further, driving mechanism 50 includes the first driving unit 52 and the second driving unit 54, the first driving unit 52
It is connect with the first lever arm 32, and the first lever arm 32 is driven to slide on support arm 31, keep the first lever arm 32 automatic
Change and adjusts；Second driving unit 54 is connect with the second lever arm 34, and drives the second lever arm 34 sliding on the first lever arm 32
Dynamic, the one the second lever arms 34 can automate adjustings, so automatic adjustment of realization movable support and microphone position.
Specifically, the first driving unit 52 includes the first actuator and the first transmission component, the first transmission component connection the
One actuator and the first lever arm 32, the first transmission component drive the first lever arm 32 along the by the driving of the first actuator
The conversion of motion of first actuator is movement in a first direction by the first transmission component, is first by the sliding of one direction
Lever arm 32 provides driving force.As shown in figure 3, the second driving unit 54 includes the second actuator 541 and the second transmission component
543, the second transmission component 543 connects the second actuator 541 and the second lever arm 34, and the second transmission component 543 passes through second
The driving of actuator 541 drives the second lever arm 34 to slide in a second direction, converts the operation of the second actuator 541 to
Sliding in second direction, the sliding for the second lever arm 34 provide driving force.
In this embodiment, the first actuator and the second actuator 541 are motor, and the first transmission component and second pass
Dynamic component 543 is rack and pinion assembly, and the first actuator is set on the first lever arm 32, and is connected in the output end of the first actuator
It is connected to gear, direction is extended along on support arm 31 and is provided with the rack gear cooperated with gear, such gear is in the first actuator
It is slided under driving along rack gear and support arm 31, and then drives the sliding of the first lever arm 32.Similarly, the second actuator 541 is set to
On second lever arm 34, and it is connected with gear in the output end of the second actuator 541, extends along direction on the first lever arm 32
It is provided with the rack gear with gear cooperation, such second actuator, 541 sliding tooth wheel rotation, and makes gear in the first lever arm 32
It is slided on rack gear, and then the second lever arm 34 is driven to slide along the first lever arm 32.It is to be appreciated that the first transmission component is tooth
Rack assembly or transmission belt component are taken turns, the second transmission component 543 is rack and pinion assembly or V belt translation component, can be realized straight line
Sliding, it is not limited here.
As illustrated in figures 4-5, in wherein another embodiment, the first lever arm 32 is rotatablely arranged on pedestal 10, the
Two lever arms 34 are rotatably connected with the first lever arm 32, and fix microphone on the second lever arm 34, pass through the first lever arm
32 and second the rotation of lever arm 34 can drive microphone adjusting position in a first direction and in second direction.
Further, driving mechanism 50 includes third driving unit 56 and the 4th driving unit 58, third driving unit 56
It is connect with the first lever arm 32, and drives the rotation of the first lever arm 32, realize the automation rotation of the first lever arm 32；4 wheel driven
Moving cell 58 is connect with the second lever arm 34, and drives the rotation of the second lever arm 34, realizes that the automation of the second lever arm 34 turns
It is dynamic.Optionally, third driving unit 56 is the motor connecting with the first lever arm 32, to drive the rotation of the first lever arm 32, the
Four driving units 58 are the motor connecting with the second lever arm 34, to drive the rotation of the second lever arm 34.
The present invention also provides a kind of noise testing equipment, including above-mentioned microphone holder 100 and controller, controller controls
Driving mechanism 50 controls the position of microphone by controller to adjust the position of movable support and microphone, realizes microphone
The automation of position is adjusted.
Further, noise testing equipment further includes semianechoic room, and microphone holder 100 is set in semianechoic room, partly disappears
Sound chamber is for reducing interference of the external noise to test.
As shown in fig. 6, the present invention also provides a kind of noise testing methods, comprising:
Step S100 detects multiple noise figures around determinand at multiple positions.
Specifically, microphone is installed by above-mentioned microphone holder 100, controller controls activity in microphone holder 100
The position of bracket, and then microphone is driven to carry out noise figure acquisition around the determinand at multiple positions.
Step S300 screens the maximum noise value in multiple noise figures, determines that maximum noise value corresponding position is noise
Source.Multiple noise figures are compared in controller, find out maximum noise value, and wheat when Directory Enquiries detects the maximum noise value
The location of gram wind, and then determine that the position is noise source, automatic detection noise source does not need ear recognition.
When carrying out noise testing to air-conditioner outdoor unit, air-conditioner outdoor unit is placed in semianechoic room, by semianechoic room
The operation of interior temperature and air-conditioner outdoor unit is adjusted, and simulates the actual motion environment of air-conditioner outdoor unit, and passes through microphone
The microphone that bracket 100 is installed carries out sound collection in multiple points, carries out Noise Sources Identification.Microphone holder 100 can be automatic
Adjust the acquisition position of microphone, and Noise Sources Identification carried out by the processing of controller, do not need laboratory technician enter high temperature or
The semianechoic room of low-temperature condition carries out ear recognition noise source, and efficiency is higher, and prevents laboratory technician in high temperature or low temperature environment
It works long hours, Protection person.
Further, step S300 specifically:
In predeterminable area, the acquisition of multiple noise figures is carried out according to preset path.Predeterminable area is movable support 30
Zone of action, for example, rectangular area, preset path are that microphone acquires the road passed through when multiple noise figures in rectangular area
Diameter, such as the upper right corner can be reached from the rectangular area lower left corner by bending path, the noise in whole region is carried out comprehensive
Acquisition order guarantees the integrality of the noise value set of acquisition, guarantees the accuracy of testing result.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of microphone holder (100) characterized by comprising
Pedestal (10)；
Movable bracket (30) is set on the pedestal (10), for installing the microphone of test noise；
Driving mechanism (50) drives relatively described pedestal (10) movement of the movable bracket (30), and drives the microphone
Adjusting position in a plurality of directions.
2. microphone holder (100) according to claim 1, which is characterized in that the movable bracket (30) includes the
One lever arm (32) and the second lever arm (34) being connect with first lever arm (32), first lever arm (32) and institute
The second lever arm (34) pedestal (10) movement relatively is stated, and drives the microphone at least in a first direction and with described the
The second party of one direction intersection moves up.
3. microphone holder (100) according to claim 2, which is characterized in that the movable bracket (30) includes branch
Brace (31), the support arm (31) extend along the first direction, and first lever arm (32) is slidably disposed in institute
It states on support arm (31)；First lever arm (32) extends along the second direction, and second lever arm (34) is slidably
Ground is set on first lever arm (32), and fixes the microphone on second lever arm (34).
4. microphone holder (100) according to claim 3, which is characterized in that the driving mechanism (50) includes first
Driving unit (52) and the second driving unit (54), first driving unit (52) connect with first lever arm (32),
And driving first lever arm (32) is slided on the support arm (31)；Second driving unit (54) and described second
Lever arm (34) connection, and second lever arm (34) is driven to slide on first lever arm (32).
5. microphone holder (100) according to claim 4, which is characterized in that first driving unit (52) includes
First actuator and the first transmission component, first transmission component connect first actuator and first lever arm
(32), first transmission component is by the driving of first actuator, drives first lever arm (32) along described the
The sliding of one direction；Second driving unit (54) includes the second actuator (541) and the second transmission component (543), and described the
Two transmission components (543) connect second actuator (541) and second lever arm (34), second transmission component
(543) by the driving of second actuator (541), second lever arm (34) is driven to slide along the second direction.
6. microphone holder (100) according to claim 5, which is characterized in that first transmission component is gear teeth
Bar assembly or transmission belt component, second transmission component (543) are rack and pinion assembly or transmission belt component.
7. microphone holder (100) according to claim 2, which is characterized in that first lever arm (32) can be rotated
Ground is set on the pedestal (10), and second lever arm (34) is rotatably connected with first lever arm (32), and institute
It states and fixes the microphone on the second lever arm (34).
8. microphone holder (100) according to claim 7, which is characterized in that the driving mechanism (50) includes third
Driving unit (56) and the 4th driving unit (58), the third driving unit (56) connect with first lever arm (32),
And driving the first lever arm (32) rotation, the 4th driving unit (58) connect with second lever arm (34), and
Second lever arm (34) is driven to rotate.
9. a kind of noise testing method characterized by comprising
Detect multiple noise figures around determinand at multiple positions；
The maximum noise value in the multiple noise figure is screened, determines that maximum noise value corresponding position is noise source.
10. noise testing method according to claim 9, which is characterized in that multiple at the multiple positions of the detection make an uproar
The step of sound value specifically:
In predeterminable area, the acquisition of the multiple noise figure is carried out according to preset path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229868.3A CN108981907A (en) | 2018-10-22 | 2018-10-22 | Noise testing method and microphone holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229868.3A CN108981907A (en) | 2018-10-22 | 2018-10-22 | Noise testing method and microphone holder |
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| CN108981907A true CN108981907A (en) | 2018-12-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811229868.3A Pending CN108981907A (en) | 2018-10-22 | 2018-10-22 | Noise testing method and microphone holder |
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| CN109459132A (en) * | 2018-12-18 | 2019-03-12 | 江西众安职业危害评价检测有限公司 | Noise testing device for workshop |
| CN109798974A (en) * | 2018-12-18 | 2019-05-24 | 江西众安职业危害评价检测有限公司 | Portable hand-held noise test instrument |
| CN110062322A (en) * | 2019-05-09 | 2019-07-26 | 常熟市工程质量检测中心 | A method of architectural acoustics test is carried out with rotatable microphone holder system |
| CN112013945A (en) * | 2020-08-27 | 2020-12-01 | 武汉理工大学 | Device and method for automatically testing noise of air compressor |
| CN113063856A (en) * | 2021-04-28 | 2021-07-02 | 芜湖利通新材料有限公司 | Noise testing device for vibration damping material for air conditioner outdoor unit |
| CN113189203A (en) * | 2021-04-28 | 2021-07-30 | 芜湖利通新材料有限公司 | Noise test system for vibration damping pad |
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| CN113063856A (en) * | 2021-04-28 | 2021-07-02 | 芜湖利通新材料有限公司 | Noise testing device for vibration damping material for air conditioner outdoor unit |
| CN113189203A (en) * | 2021-04-28 | 2021-07-30 | 芜湖利通新材料有限公司 | Noise test system for vibration damping pad |
| CN113189203B (en) * | 2021-04-28 | 2022-04-05 | 安徽蓝格利通新材应用股份有限公司 | Noise test system for vibration damping pad |
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